Planning method for CCOS polishing process full-band convergence path

Abstract

The invention belongs to the technical field of optical machining, and particularly relates to a planning method for a CCOS polishing process full-band convergence path. The method includes the following steps that a machining speed distribution matrix is calculated according to a removal function and a surface-shape error obtained by means of detection at first; then a primary iteration path in a path algorithm is determined according to the speed distribution matrix, the primary path is extended continuously through the path algorithm, and a machining polishing path is obtained through repeated iteration; and finally a control program is generated according to the obtained polishing path and a dwell time matrix, and a workpiece to be machined is subjected to CCOS polishing. The planning method has the advantages that rate stability of a machine tool can be kept to the maximum degree when the machine tool moves along the polishing path, and thus convergence can be better achieved in low-intermediate frequency machining; and in addition, path choices in each time of machining are different, surface-shape intermediate frequency convergence is facilitated, and the machining quality can be improved through the combination.

Description

technical field [0001] The invention belongs to the technical field of CCOS optical polishing processing, in particular to a polishing path planning method that can effectively improve the convergence efficiency of the whole frequency band. Background technique [0002] In modern optical processing, computer controlled surface shaping (CCOS) is usually used to process various optical components. The basic principle of CCOS is to use a grinding head that is much smaller than the diameter of the workpiece to achieve quantitative removal of materials at each point of the surface shape by using a grinding head that is much smaller than the diameter of the workpiece to control the residence time of each dwell point on the workpiece according to the surface shape error data. Path planning is a very important part of the CCOS polishing process. The amount of material removal can be regarded as the convolution of the processing removal function and the dwell time matrix on the proce...

AI Technical Summary

Problems solved by technology

However, for these fixed paths, when solving the dwell time, it is easy to have a sudden change in rate and affect the processing accuracy, and when using the above fixed paths to process, it is easy to produce the problem of prominent intermediate frequency, which leads to the decline of processing quality.

So far, there is still no suitable path planning method that can solve the above two problems at the same time. Therefore, it is necessary to design a new path planning method to reduce the rate mutation during processing, and at the same time, it is necessary to increase the diversity of paths to avoid the intermediate frequency generated by fixed paths. Error, which will greatly promote the CCOS polishing process

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